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<p class="level0"><a name="NAME"></a><h2 class="nroffsh">NAME</h2>
<p class="level0">CURLOPT_COPYPOSTFIELDS - have libcurl copy data to POST <a name="SYNOPSIS"></a><h2 class="nroffsh">SYNOPSIS</h2>
<p class="level0">#include &lt;curl/curl.h&gt; 
<p class="level0">CURLcode curl_easy_setopt(CURL *handle, CURLOPT_COPYPOSTFIELDS, char *data); <a name="DESCRIPTION"></a><h2 class="nroffsh">DESCRIPTION</h2>
<p class="level0">Pass a char * as parameter, which should be the full <span Class="emphasis">data</span> to post in a HTTP POST operation. It behaves as the <a Class="emphasis" href="./CURLOPT_POSTFIELDS.html">CURLOPT_POSTFIELDS</a> option, but the original data is instead copied by the library, allowing the application to overwrite the original data after setting this option. 
<p class="level0">Because data are copied, care must be taken when using this option in conjunction with <a Class="emphasis" href="./CURLOPT_POSTFIELDSIZE.html">CURLOPT_POSTFIELDSIZE</a> or <a Class="emphasis" href="./CURLOPT_POSTFIELDSIZE_LARGE.html">CURLOPT_POSTFIELDSIZE_LARGE</a>: If the size has not been set prior to <a Class="emphasis" href="./CURLOPT_COPYPOSTFIELDS.html">CURLOPT_COPYPOSTFIELDS</a>, the data is assumed to be a zero terminated string; else the stored size informs the library about the byte count to copy. In any case, the size must not be changed after <a Class="emphasis" href="./CURLOPT_COPYPOSTFIELDS.html">CURLOPT_COPYPOSTFIELDS</a>, unless another <a Class="emphasis" href="./CURLOPT_POSTFIELDS.html">CURLOPT_POSTFIELDS</a> or <a Class="emphasis" href="./CURLOPT_COPYPOSTFIELDS.html">CURLOPT_COPYPOSTFIELDS</a> option is issued. <a name="DEFAULT"></a><h2 class="nroffsh">DEFAULT</h2>
<p class="level0">NULL <a name="PROTOCOLS"></a><h2 class="nroffsh">PROTOCOLS</h2>
<p class="level0">HTTP(S) <a name="EXAMPLE"></a><h2 class="nroffsh">EXAMPLE</h2>
<p class="level0"><pre>
<p class="level0">CURL *curl = curl_easy_init();
 if(curl) {
 &nbsp; char local_buffer[1024]="data to send";
 &nbsp; curl_easy_setopt(curl, CURLOPT_URL, "<a href="http://example.com">http://example.com</a>");
 <p class="level0">&nbsp; /* size of the data to copy from the buffer and send in the request */
 &nbsp; curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, 12L);
 <p class="level0">&nbsp; /* send data from the local stack */
 &nbsp; curl_easy_setopt(curl, CURLOPT_COPYPOSTFIELDS, local_buffer);
 <p class="level0">&nbsp; curl_easy_perform(curl);
 }
 </pre>

<p class="level0"><a name="AVAILABILITY"></a><h2 class="nroffsh">AVAILABILITY</h2>
<p class="level0">Added in 7.17.1 <a name="RETURN"></a><h2 class="nroffsh">RETURN VALUE</h2>
<p class="level0">Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space. <a name="SEE"></a><h2 class="nroffsh">SEE ALSO</h2>
<p class="level0"><a Class="manpage" href="./CURLOPT_POSTFIELDS.html">CURLOPT_POSTFIELDS</a> <a Class="manpage" href="./CURLOPT_POSTFIELDSIZE.html">CURLOPT_POSTFIELDSIZE</a> <span Class="manpage"> </span> <p class="roffit">
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